Improvement in vehicle-springs



J. J. COBB. Vehicle-Spring.

No. 212,791. Patented Mar. 4,1879.

sired shaped steel. coil, once and onehalf around at least, which UNITEDSTATES PATENT OEEIoE.

JOHN J. COBB, OF GRAND RAPIDS, MICHIGAN.

IMPROVEMENT IN VEHICLE-SPRINGS.

Specification forming part of Letters Patent No. 212,791, dated March4,1879; application filled August 3, 1878.

To all whom it may concern Be it known that I, JOHN J. COBB, of GrandRapids, Michigan, have invented a new and useful Improvement in Springsfor Buggies, Seats, &c., of which the following is a specification Myinvention relates to a coiled (not spiral) spring of peculiarconstruction.

This spring is made of a single rod or wire of round, square, octagonal,or any other de- This spring is made of a coil is set perpendicular, asshown in drawings, Figure 2, having arm H, with elbow Gr, projecting andforming an L or T portion, F, for box of buggy, &c., to rest upon. Thisarm is bent horizontal.

Arm E is a projection from coil D in the same direction as arm H, havingelbow O, bending perpendicularly and terminating in cars B.

The object of elbow O is to allow the stretch of the spring.

Ears B may be attached to clipties A, which clip-ties may be hung fromside bars of buggy or otherwise.

The manner of using this spring is as follows: Having attached theclip-ties to any four points of the buggy, near each of the corners,upon the sides, the ears B of arms E are attached thereto, (four or moreof the springs being used for a buggy or wagon.) From ears B arms E benddownward to elbows G, which turns the rod in a horizontal directionuntil it begins to elevate at point I, turning upward and over at leastone and a half time, forming coil D; then passing outward horizontallyparallel and above the lower arm any less distance, H, than the lengthof arm E; then bending to the right or left, or both, forming rest F forbody of buggy, &c.

Some of the advantages of this spring over others are: The small amountof steel necessary to make the springs for a buggy costs much less, andis lighter than other springs in use. The peculiar shape of the coil,hung as it is, gives no strain upon any one portion of the spring, butdistributes the strain equally, conveying to the buggy no sudden orjerking motion, 'no matter how rough the road or size of the ordinaryobstacles passed over. These springs being attached to opposite sides ofthe buggy, as the one coil is closed by weight upon one side theopposite coil is opened, thereby producing a double resistance to sidemotion. The peculiar construction and hangin g of this spring alsoprevents any considerable back or front motion to the body of the wagon,which under all circumstances has an easy and indescribably pleasantmotion, whether bearing a single individual or several persons.

I am aware that there have been in use spiral springs of various kinds.To such I make no claim, the action of my spring being entirelydifferent from that of anyordinary coiled or spiral spring.

I disclaim any desire to obtain a patent upon a spring consisting of orhaving two coils in or upon the same piece of metal, or any other formof double-coil spring.

What I do claim as my invention, and desire patented, is-

1. A spring for buggies, seats, 850., consisting of a singleperpendicular coil, 1), formed near the center of a bar or rod of steel,the two projecting ends of which, extending in the same direction, formupper arm, H, (the end of which is shaped at angle G into rest F for thebox, seat, &c.,) and lower arm, E, longer than arm H, and bent near theend to a perpendicular elbow, G, and upon the end having ears B, as andfor the purposes set forth.

2. The above-described spring for buggies, seats, &e., consisting of asingle perpendicular coil, D, as described, having upper arm, H, withangle G and rest F, also having arm E, with elbow G and ears B, incombination with clip-ties A, as and for the purposes set forth.

JOHN J. COBB.

VVitnesse-s:

Capt. G. W. McOoRMIoK, EDWIN A. BURLINGAME.

